EPA entered into a proposed administrative settlement under CERCLA that requires the settling party to pay U.S. response costs incurred at the Peach Orchard Road Groundwater Plume site in Augusta, Georgia.

EPA proposed to incorporate American Society for Testing and Materials standards to allow the use of alternatives to mercury-containing industrial thermometers.

EPA proposed to grant a petition submitted by Gulf West Landfill to delist the leachate generated at its facility in Anahuac, Texas, from the lists of hazardous wastes.

EPA is providing notice of, and soliciting written comments 
on, a tentative determination to deny an administrative petition 
submitted by the Sierra Club under RCRA section 7004. EPA issued an 
earlier notice denying this same petition in November 2008. However, 
the Agency at that time failed to comply with notice and comment 
provisions in its regulations. Accordingly, we are now giving the 
public the opportunity to provide comments on this tentative decision. 
This petition requests EPA to reconsider the final rule, ``Regulation 
of Oil-Bearing Hazardous Secondary Materials from the Petroleum Refining Industry 
Processed in a Gasification System to Produce Synthesis Gas,'' 
published in the Federal Register on January 2, 2008. The EPA 
considered the petition, along with information contained in the 
rulemaking docket, and has tentatively decided to deny the petition. In 
a letter from EPA Assistant Administrator Mathy Stanislaus dated 
January 21, 2011, EPA provided the petitioner with its tentative 
decision to deny the petition for reconsideration. The letter explains 
EPA's reasons for tentatively deciding to deny the petition. After 
evaluating all public comments, as well as any other information in the 
rulemaking record, EPA will publish either a final denial of the 
petition or issue a proposed rule to amend or repeal the regulation.

EPA proposed to deny a petition submitted by the Sierra Club to reconsider its final rule on oil-bearing hazardous secondary materials.

EPA proposed to approve revisions to Minnesota's hazardous waste management program.

EPA Region 10 proposed to approve a modification to Alaska's municipal solid waste landfill program concerning research, development, and demonstration permit requirements; see above for direct final rule.

EPA entered into a proposed administrative settlement under CERCLA that requires 275 de minimis settling parties to pay $17,027,998 in U.S. response costs incurred at the Operating Industries, Inc., Superfund site in Monterey Park, California.

EPA finalized amendments to Method 301, Field Validation of Pollutant Measurement Methods From Various Waste Media.

EPA delayed the effective dates for the final rules titled "National Emission Standards for Hazardous Air Pollutants for Major Sources: Industrial, Commercial, and Institutional Boilers and Process Heaters" and "Standards of Performance for New Sources and Emission Guidelines for Existing Sources: Commercial and Industrial Solid Waste Incineration Units" until judicial review and Agency reconsideration are completed.